Electrical device.



Patented Nov. 16, 1915.

proveinent in Electrical Devices',A of which narran -s'rarns riarnnfr carrer. .N

MICHAELiSETTER, OF CHICAGO, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS, TO

VFIRST TRUST AND SAVINGS BANK`,` TRUSTEE, 0F CHICAGO, ILLINOIS. Y

ELECTRICAL DEVICE.

spammen of Lesers Patent. Patented Nov. 1e, 1915;

Appiicatio'n flied December 6,1906. `serial No. 346,575'.

resident of` Chicago,` Cookcounty, Illinois,`

have invented a certain new a'nd useful Imthe following is a specification.

My invention ,relatesto combined drops and jacks and more' particularly to devices of this character in which provision is made for automaticallyA resetting the drop or shutter when the operator inserts a' plug in the 'acln i J Generally stated'the'object ofm'yinvention is the provision of an improved and highly eflicient combined drop and jack for use in telephone switchboards or other 4similar apparatus. y

Special objectsy of my invention are the provision of a magnet armaturejwhich is readily removable as a unit and without removing the armlor latch which extends forward to the drop or shutter; the provision of an electromagnet Yand a set of jack springs which can be removed together :as annit,

without the necessity of removingfthe .drop or shutter, and withouty removing or disturbing the `sleeve orthimble of the jack; the provision of a magnet coil which can be readilyremoved without removing or 'disturbing either the shell or the core of the magnet; the provision of means by whichy the electromagnet and its armature and latching arm may, together with the jack springs, be removed as a unitwithout the Y necessity of rremoving either the shutter or SETTER, a f

of this character, of a drop ory shutter which can be readily removed without removing f other parts; and the provision of certain detailsy and features of improvement tending to increase the general efficiency of a device of this particular character.

To the foregoingv and other useful ends, my invention consists in matters hereinafter set forth yand* claimed. f

In `the accompanying drawings, Figure l is a `rear{elevationof a combined drop and y jack embodying the principles of my invert`- tion. y Fig. 2 is an enlarged longitudinal section ofthe same. Fig. 3 is a detail view of the rear portion of the magnet shell. Fig. l

is a detail perspective view of the magnet armature. F ig. 5 isa detail perspective viewv of the rear endportion of the armature o armor latch. Fig. 6 is a detail view of the rear head or disk of insulation by which the magnet co-il is heldin place.

As' thusk illustrated, my invention comf prises a front supporting structure A, which may b e of any suitable character. The shutter is pivoted to the front of the said supporting' structure by a pivot-bearing "b lof. cated at its Vlower edge. VThe jack sleeve or testing Ithimble' C'ils also preferably removf ably secured to and supported by ther said structure A. A magnet shell or casingkD has'itsclosed forward end provided withan opening into which vis fitted the reduced forward end portionof a magnet core E, both of which are clamped in place by a screwy F which isr inserted throughk Va plate a and screwed into the end of the said core. Over they said core is fitted a sheet-metal sleeve G upon which is mounted the magnet coil g, and to the ends of which are secured the heads or disks of insulation g1 and g2, the

former being provided with a peripheral lug or extension g3 adapted toengage the slot or notch formed in the rear end of the shell or casing D. In` this'way the magnet core is readily removable and is locked against turning when adjusted in place. To the under'side ofsaid magnet sleeve or casing D f there are secured the four jack springs H, ntl'and 72,2 with strips of insulation interposed "between,` and allsecured in place byr p by the falling of the drop or shutter, v I its forward end the magnet shell D is prefmeans "of screws 72,3. It will be observed that the spring H extends forward and normally rests upon the structure surrounding the jack sleeve or fthimble C, but not in electrical contact withisaid sleevefor thimble. Theiipturned Yforward end portion it* of said spring isadapted to engage and restore the drop or shutter B when yaV plug is inserted in the jack. VFor this purpose the said spring is provided with a piece of insulation adapted to be engaged and lifted bythe spring la,

Vwhich latter is inturn engaged and lifted by direct engagement with the ,plugwhen the latter is inserted in the jack. Itwillbe seen that the ack sleeve or thimble is removably secured to the plate d, which latter is in turn removably secured to the supporting structureAt, as, for example, by screws I. yAt its rear'end the magnet ysleeve is provided with a bracket J having a pair of ears j through vwhich arefins'erted theV bearing screws jl.. n

The magnet armature K .is provided` with a removable spring clip k" clamped thereto by a th-umbscrew cl. i The'shutter' is held normally inits'elevated or raised .position by the longitudinally extending latchV or armature-arn'irL, and the rear endV of this arm is'provided with prongs Z adaptedto enf'- gage the notches 702 in the upper lend ofthe armature K. When the armature' and its arm are thus brought 'together theyV arev vyieldingly retained in such relative :positions by the engagement of the spring clipv with the upturned lugs Z1 forme'donthesaid a`r-ifn.

The forward end of the Asaid arm isl provided with a hook Z2, adapted'to reach over. and engage the upper edge of the drop or shutter B.V As shown, the bearing screws 7'1 arefadapted to vengage small sockets or pivot bearings Z3 in the neckportion of the.

arm L. In thisway the llatch or arm .Lis

pivotally mounted rat its rear rend, andy the" armature vK is lremovably mounted upon the pivoted rear Yend` portion of said arm or latch,` 'The terminals VM and N'ektend rearwardly from tlie'magnet structure, and the armature yis provided with notches 7c3y through which the Said terminalsl extend." Other suitable terminals can also be pro-v vided for connecting the combined drop and jack with the proper line and circuit wires.'V

At the forward end of thecombined drop and jack structure night-alarm contacts O and P are shown adapted to be brought into electrical connection with each other erably provided witha notch Q adapted'to be engaged by a lug q onthe plate a, thereby lockingV the magnet structure against turn v ing movement about its core ory axle.

With the foregoing construction it. will be seen"thattheelectroinagnetl and arma,

ture and armature-arm or latch can, together with the jack springs and jack'sleeve, be readilyy removed as a unit withoutA removing o-r disturbing the drop or shutter.

It'rwill also bef'seen thatAV the electromagnet and its armature and armature-armrand jack springs can be removed as aunit without disturbingthedrop or shutter or the sleeve Vor testing thimble. Furthermore, the magnet armature can be removed without re- Y structure. The shutter is also readily removable, of course, by removing the pivot or pin' With such provisions, inspection and repairing of the Combined drop and jack is greatly facilitated.

Broadly, ofcourse, my invention is anl electrical device embodying novel features.

andV combinations which' 'can be used in a combined drop and `jack, ory for-5 other pur-A poses.

W hat I claim as my invention.l isz,"- 1. A combined drop and jack whereof the dropfisadapted to be restored bythe insertion vof a plug in the jack comprising, an

electromagnet, ahvdropl shutter, a` pivotedY latch for said shutter, an armature, a, spring clip for removably securing the armatureY to the saidvlatch, and a jack below thedrop shutter.

drop is adapted torbe restored by the insertion of a lplug inthejack, comprising4 an eleotromagnega shutter, a pivoted latchv for l said shutter, and anarmature hung on said latch, saidfarmature provided with. notches and a spring clip, and said ylatch provided 2. `A combineddrop and-jack whereof the 1 with a forked end having portions adapted Y to engage tlie'notchesv andl spring clip on the armature.`

3.V A combined drop and jack whereofV the drop is adapted. to be restored byutlielins sertion of a plug inthe jack, comprising an electromagnet, a shutter, a pivoted latch for V said shutter, an armature hung on said latch,

and lugs on said latch, saidy armature pro-\ videdwithV an end having spring portions adapted to engagey said lugs Aand clip said armature onto said latch. 1

l.A A combined drop and jack comprising. a support, a shutter carried on one side ofl said support,'a magnetcarried on they other sideof. support, a casing for. said mag-l net; springs carried by said. casing, a piv v oted ,latcliffor said shutter, an. armaturel for;L

Signed by me at bicago, @ook county, Illinois, this 30th day of November, 1906.

MICHAEL SETTER.

said magnet sustained on said latch only by means of a spring clip, said casing, magnet, springs, latch and armature assembled as a unit, means for securing said unit to said support, the unit being removable as a Whole Without disturbing said shutter by merely releasing said securing means.

Witnesses:

EDWARD D. FALES, EDWARD A. MELLINGER.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. C. 

